Johnny Manziel has the same initials as Joe Montana, but if the Browns rookie expects to have close to the same NFL quarterbacking career, maybe he should heed the words of the 49ers' legend.

It took Montana until after his first of four Super Bowl victories to learn how to balance fame off the field and success on it. He told NFL Network on Wednesday that it wouldn't have been possible without the sage advice of his legendary coach: the late Bill Walsh.

"It's OK to do some things but try to cut it back and don't forget about football," Montana said in recalling Walsh's message to him. "Because that's what got you there and that is what's going to keep you there. So you have to make sure you spend the time on football as much as getting out and about."

Too much has been made of what Manziel, already a famous superstar because of his dazzling Heisman-winning play at Texas A&M, has been doing in his spare time during his first rookie offseason. But it's too early to say anything about its effect on his football, because that's never been an issue.

Once the serious business of training camp rolls around next month, Manziel will have no choice to focus on football full-time as he tries to win the Browns' starting job and make his NFL debut a success.